chore(release): 0.0.7

Squash-merge lib-standardisation: adopt repo standards across packaging,
tooling, docs, and CI.

- standardize pyproject.toml (canonical packaging, lint config, extras, GSDFC pydoclint)
- add py.typed marker, modernize type hints and Google-style docstrings
- nest generated docs under docs/lib and docs/mcp; add hand-written wiki
- adopt standard Type A PyPI CI pipeline (tag==version guard + quality gate)
- promote generated CHANGELOG.md; bump version to 0.0.7

openapi_first/cli.pyi

@@ -0,0 +1,7 @@
+from pathlib import Path
+
+DEFAULT_TEMPLATE: str
+
+def available_templates() -> list[str]: ...
+def copy_template(template: str, target_dir: Path) -> None: ...
+def main() -> None: ...